Hose coupling



Dec. 2.1 1926. 1,611,286l

E. H. SHAFF HOSE COUPLING Filed Jan. 26. 1925 Patented'. nec. 2i, 192e,'j

aannemer. snare', or GRAND Havnunncnienn, nssenonro WILLIAM n. KELLER, v

' Inc., or Guarini-raven, iyricrrreeir, A' conronarron or MICHIGAN.

Appncatrmnmea'January'aej igea, semaine. 4,687. j

This yinvention relates to couplin'gs and particularly to couplings `forhose and the' like.

Another objectof. Vthe invention is to provide acoupling having nooutwardly proj ecting parts vthereon so that the coupling in beingdragged about with the hose Willlnot yet is quickly detachable by hand,andvvhich rbe likely to catch .upon `other objects. e

l 'A further object y'of the i invention is Lto provide' a couplingwhichlocks securelyand is of' such a character that it may bev sirn-4 '10137and cheaply constructed. In the accompanying -dravvin'gs,"whih Vshovv anexemplary embodimentof. Vth-einf vention-forthe purpose "of illustrationand.

l explanation, Figure 1 shoyvsrthe device in a coupled relation. Y' fFig. 2Lis a longitudinal centralV of the device shown in Fig. 1.

Fig; 3 isa. vieu7 of'ithe device of Fig. 1 in separated oryunco'upledrelation. Fig. 4 is a View in elevation looking-towardthe'right handpart of Fig.j3. y A

In the drawings, Figure 1 represents a section of'an'air line in Which acoupling is placed.- Of course, it Will be understood 'that othercouplings maybel placed linthe line which may be composed of manylengths of hose. It is a characteristic of the coupling disclosed thateach part thereof is identical thus permitting each length of hose tohave-duplicating vlixtures -at each end. y

In Fign'l the hose length carries one part 6 `vand theV hose length 7.carries a similar vpart '8.l The parts 6 and 8 are duplicate parts andmutually interlocking to constitute the coupling. Each part carries theWellknown circular barb or corrugated tubular projection 9'to Whichl thehosev lengths 5 and 7. are secured by suitable clamps as theWires 1 10.j The tube 9 has an enlarged head 1101i cylindrical form with thecylindrical Wall 12 provided With an internaljflange 13. A suit-L ablegasket Vis provided for each part to abut a similar gasket on the other'part to effect closure of the coupling. Because certain resiliency ofContact isl required for the `iorln ilv. economicallykand vefficiently:manufac-k section of coupling disclosed.,v Il' use ja :compressiblerubber gasket' Aor y Washer .'14 in each part.

Vthile the flangenl isnot necessairyit is f nel. rornwhich itfmay' be.readi y removed .p I

lockingV clamping means'. arey provided over provided bylthefjundercutting of an` inter- Vnal'.anii'ular grooveorchannel.yV'lhechan` l nel. 'serves 'as' a'retainer for the rubberl gasketWhichlis' suitablyetormed to lie in said' chan, V

flange or an annular base portion '16 shown in Fig. underlying ytheenlarged head 11.

TheA collar .15 is t'zylindrical andshell-like jfornn- 'Adjacent thebase-16 it is ccntinf4 uous, lcircumferentiallyv in the region indi'-cated atfl asknurled. The cylindricallpo'rtion beyond `theknurlingextends Vpast-thel end 'of the. Walls 12 ofgheadr 11v `so that'the gasket 14 is Within therendof 'the collar.

Thecylindrical portion ofgthe collar15. is cut awayinn'- part formingalternate jlugs andl recesses oiequal .arcuate length-at the outer endr18j, each"length being indicated 'in Fig. 4 by the numeral-19 for. alugandthenul Vmeral v2O'or a recess. Infthe present. in-

stance butv two lugs andftwo recesses .are

vformed in each "member, each then being jabout in arcuate-extent.Therecess'is preferably slightly larger vthan the sov .that the'partsmay in terit loosely andlmesh easily when coupled together. 'Theidepthof lel) the recessed portion 20 is sufficient to bring the Aface of Athecompressed gasket 14 carried by head 11 about midway of its depth.

By this construction the parts may'beiit-y ted together bringingtheend'faces otfthe gaskets 14 into contactfto 'sealfthe passage.;

through the coupling. Lateral interlockingy means :is provided for thecoupling by un- `dercuttingeach lug 19 froml the bottom of the adjacentrecess 20, thusleaving overlying projections 21 as part oiithellug.AvThis undercutting is done in the same direction about the yperiphery ofthe coupling inV order `to permit mutual interlocking of theyprojections 21 by a twisting'l motion of the parts.

19st,'. Thev .projections 21' themselves areV again-f"`someWhat-undercut'in a direction alongthe `airis' of lthe coupling bygiving the underside Y of the projection a shape corresponding to areversed letter S, thereby providing .other projections or hooks'22Which engage axially of the coupling.

In use, the coupling parts are iirst placed together as would follow`from their position in Fig.Y 3 in Which they are arranged for `axialmotion toward eachother, each lug moving into a recess on theoppositerpart. As the insertion approaches completion the rubber gasketsmeet and are compressed, op-

posing the insertion. .I'Vhenthe insertion is completed the partsaretwisted to, move the projections 2l on the tWo parts into anoverlapping relationship whereby to hold the parts against separation.By providing vthe' reverse Sfshaped side` on the projectionl, theA smallhooks or `proj ections 22 'thusformod `permit slight ,motion axiallytoward separation of ythe members. The. separation torcedlcy theresiliency of the compressed rubber gasket. However, the motion 'per`initted-is just slight enough to loclrthe parts against laterally movingout of locked engagement by a twisting action. A ,further advantage ofthe construction described is the telescoping of the` lugs 19 of onemember i thermore, the provision of duplicate parts on a singleV lengthofhose contributes largely to the Idesirability of thisV type ofcoupling' and may in many cases prevent reversing a length of hose'V toeect the couplingv A further advantage of the present invention arisesbecause of the fact that the two sections of the coupling. are`identical and duplicating. In this instance the advantage accrues tothe manufacturer becauseV the malting involves but one complete part andthe production of this part is thereby doubled.

j In the storing, the shippingand .assembling of couplings constructedaccording to Vthis invention7 no` regard vneedbe takento as` semblecomplementary *partsbecause' any7 two pieces Will be complementary toeach other. Y

While the devicev herein -illustrated and described is .a valuablefandluseful embodiment of the invention,-it is to be understood Vthat it inno Way" limits the invention short of the scope of the claim appendedhereto.

:I claim as my invent-ion: Y f j A hose coupling having two vsimi-larparts adapted for interlocking engagement, each part having incombination, aY pressed metal collar including a centrally aperturedbase and a peripheral side Wall, a pressed metal headl fittedsnu-glyinside said'V collar having a tubular member rigidl therewith and-projecting rearwardlythrough the aperture in the base of said collar, aninturned peripheral flange 'on said head, a resilient gasket removably`VheldV in said head by `said flange and having a portion extendingthereabove, and lugs orined from Vthe peripheral side wall of eachcollar, said lugs oneach otsaid parts being adapted to interengage tolock 1 thetwo parts together.

In testimonywhereof, Iliave hereunto a iiXed i'nyr signature.

ERNEST n. site ai@

